The Deipnosophists (2.21)

Phylarchus says that Theodorus the Larisssean was a water-drinker; the man, I mean, who was always so hostile to king Antigonus. He asserts also that all the Spaniards drink water, though they are the richest of all men, for they have the greatest abundance of gold and silver in their country. And he says, too, that they eat only once a day, out of stinginess, though they wear most expensive clothes. And Aristotle or Theophrastus speaks of a man named Philinus as never having taken any drink or solid food whatever, except milk alone, during the whole of his life. And Pythermus, in his account of the tyrants of Piræus, mentions Glaucon as having been a water-drinker. And Hegesander the Delphian says that Anchimolus and Moschus, sophists who lived in Elis, were water-drinkers all their lives; and that they ate nothing but figs, and for all that, were quite as healthy and vigorous as any one else; but that their perspiration had such an offensive smell, that every one avoided them at the baths. And Matris the Athenian, as long as he lived, ate nothing except a few myrtle-berries each day, and abstained from wine and every other kind of drink except water. Lamprus, too, the musician, was a water-drinker, concerning whom Phrynichus says,

that the gulls lamented, when Lamprus died among them, being a man who was a water-drinker, a subtle hypersophist, a dry skeleton of the Muses, an ague to nightingales, a hymn to hell.